Fundamental Particle

Name:
Fundamental Particle
Detailed information:
(elementary particle). One of the many constituents of atoms in either the normal or the excited state, i.e., protons, electrons, and neutrons, that are directly involved in chemical reactions. Other subatomic species are mesons, positrons, neutrinos, hyperons, etc. Photons are light quanta, i.e., “particles” of energy that have no rest mass.See Particle; Photon.